@thomasrcox The same question came to my mind quite recently, but I could not find a fully consistent answer. Thanks to the authors for this summary! I think sometimes we should pose such "childish" questions to see the limits of our knowledge.
Reports today of Noam Chomsky's death (in Jacobin and New Statesman, since taken down) were greatly exaggerated. I have confirmation from Valeria, his wife, that he is alive and well.
Germanium has the potential to substitute porous silicon in nanomedicine due to its faster dissolution rate, safety and optical benefits. Congratulations to my previous lab with publishing this big study in #AdvancedScience
https://t.co/dAf9Km1WFU